gcc/testsuite/c-c++-common/Wduplicated-branches-9.c

   1 /* PR c/64279 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-Wduplicated-branches" } */
   4
   5 extern int *p, foo (void), a[10];
   6 #define N 5
   7 #define M 5
   8 #define I i
   9
  10 void
  11 f (int i)
  12 {
  13   *p += i ? 1 : 1; /* { dg-warning "this condition has identical branches" } */
  14   *p += i ? N : M; /* { dg-bogus "this condition has identical branches" "" { xfail *-*-* } } */
  15   *p += i ? M : N; /* { dg-bogus "this condition has identical branches" "" { xfail *-*-* } } */
  16   *p += i ? i : i; /* { dg-warning "this condition has identical branches" } */
  17   *p += i ? i++ : i++; /* { dg-warning "this condition has identical branches" } */
  18   *p += i ? foo () : foo (); /* { dg-warning "this condition has identical branches" } */
  19   *p += i ? ({ i++; }) : ({ i++; }); /* { dg-warning "this condition has identical branches" } */
  20   *p += i ? a[i] : a[i]; /* { dg-warning "this condition has identical branches" } */
  21   *p += i ? a[5] : a[5]; /* { dg-warning "this condition has identical branches" } */
  22   *p += i ? a[N] : a[M]; /* { dg-bogus "this condition has identical branches" "" { xfail *-*-* } } */
  23   *p += i ? a[5] : a[M]; /* { dg-bogus "this condition has identical branches" "" { xfail *-*-* } } */
  24   *p += i ? a[M] : a[5]; /* { dg-bogus "this condition has identical branches" "" { xfail *-*-* } } */
  25   *p += i ? a[I] : a[I]; /* { dg-warning "this condition has identical branches" } */
  26   *p += i ? a[i] : a[I]; /* { dg-bogus "this condition has identical branches" "" { xfail *-*-* } } */
  27   *p += i ? a[I] : a[i]; /* { dg-bogus "this condition has identical branches" "" { xfail *-*-* } } */
  28
  29   *p += i ?: 1;
  30   *p += i ?: M;
  31   *p += i ?: N;
  32   *p += i ?: i; /* { dg-warning "this condition has identical branches" "" { target c++ } } */
  33   *p += i ?: i++;
  34   *p += i ?: foo ();
  35   *p += i ?: ({ i++; });
  36   *p += i ?: a[i];
  37   *p += i ?: a[5];
  38   *p += i ?: a[M];
  39   *p += i ?: a[M];
  40   *p += i ?: a[5];
  41   *p += i ?: a[I];
  42   *p += i ?: a[I];
  43   *p += i ?: a[i];
  44
  45   *p += (i > 5 ? (i > 10 ? i : i) : i); /* { dg-warning "this condition has identical branches" } */
  46 }